A New Slip-Line Field Modeling of Orthogonal Machining with a Rounded-Edge Worn Cutting Tool

Abstract

2 In this study, a new slip-line field model and its associated hodograph for orthogonal cutting with a rounded-edge worn cutting tool are developed using Dewhurst and Collins's matrix technique. The new model considers the existence of dead metal zone in front of the rounded-edge worn cutting tool. The ploughing force and friction force occurred due to flank wear land, chip up-curl radius, chip thickness, primary shear zone thickness and length of bottom side of the dead metal zone are obtained by solving the model depending on the experimental resultant force data. The effects of flank wear rate, cutting edge radius, uncut chip thickness, cutting speed and rake angle on these outputs are specified.

Edge Effect Analysis on orthogonal cutting the Plastic Metal Material-C10100 with Negative Rake Angle Tool

“…With the rapid development of the single-abrasive grinding processing technology [1,2] and ultra-precision machining technology [3][4][5][6], scholars have developed more and more interested in the project's research on the forming mechanism and related characteristics of the negative rake tool and rounded-edge in micro-cutting condition. The ratio of the edge radius to the cutting thickness changes the effective negative rake angle of the tool in a certain extent micro-cutting condition [7].…”